<!--
 * @Author: LiuYan
 * @Date: 2022-10-22 17:42:16
 * @LastEditors: LiuYan
 * @LastEditTime: 2022-10-22 17:42:19
 * @Description: 
-->
<template>登陆</template>
<script setup>
import { onBeforeUnmount, reactive } from "vue";
class Demo {
  constructor() {
    this.data = reactive({});
  }
}
let demo = new Demo();
onBeforeUnmount(() => {
  demo = null;
});
</script>
<style lang="less" scoped></style>
